Presumably, it's the strength of your personality that does the trick.
Hm... Just trying to envision the above... doing skill checks vs. Bluff, Persuation and Intimidate for Turn Undead
Cleric: "Ok, you ugly pile of worm eaten crap, are you going to lie down and be dead again now or do I have to take you apart at the joints and carve my initials on every single one of your bones with a spoon?"
Skeleton (failing will check vs. bluff): "Ehh, Ok "
Perhaps Charisma is better